Improvement in lamps



)UNITED STATES PATENT OFFICE.

ALBERT G. BUZBY, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN LAMPS. i

Specification forming part of Letters Patent No. 150,824, dated May 12,1874; application filed December 10,1873.

\ coal-oil lamps having two wick-tubes; andthe `object of my invention is tofincreasc the brilliancy of the flames in such lamps, by introducing to the same plentiful and separate supplies 'of air, in the manner fully explained hereafter. y

In the vertical section, Figure 1 of the accompanying drawing, A represents the fountain or reservoir of thelamp; and consists, in the present instance, of a quadrangular casing, from which project the two iiat tubes a vc for receiving the usual llat wicks l) b, the latter being controlled by the usual toothed wheels d d on spindles which project through the the casing. These wick-tubes are considerably wider than the wicksare thick, so that air admitted tothe reservoir A, through elongated openings w x, can pass freely over the wicks through the said tubes. This is an important feature of my invent-ion, for I have found after repeated tests that the air havfng free access to the reservoir, and having no other outlet therefrom than through the wick-tubes, enhances the brilliancy of the ame. A dome or hood,D, the character of which will be best understood by referring to the perspective view, Fig. 3, is placedk overthe wick-tubes, and rests with its lower edge on the top of the reservoir, this dome being closed at the top, with the exception ofthe elongated opening e for the flame, and having opposite perforated sides f, the latter forming, with the wicktubes, two side air-chambers, h h, and two end air-chambers, z' i, as best observed in the plan view, Fig. 4. These four air-chambers extend to the top of the wick-tubes, where all four communicate -With the interior of the dome. The end chambers z' t' are separated from the side chambers h h by partitions m, Fig` 4, air having access to the said end chambers through perforations a in the dome. In fact, all four chambers are separated from each other below the tops of the wick-tube, each chamber having a separate inlet for the admission of aira feature which I have found to be of much importance, as it tends to produce a steady, uniform, and brilliant flame, free from smoke. Between the wick-tubes there is another airchamber, having inlets q at opposite ends of the dome, (see Fig. 3), and across this air chamber, at a short distance below the top of the wick-tube, extends a flat perforated plate.

It will thus be seen that air can gain access to the flame in seven directions, namely; through the two openings fr, and through the reservoir and wick-tubes, through two side chambers, h It, through the two end chambers 'i i, and through the central air-chamber p, the result of this plentiful supply of air being a brilliant smokeless ame.

I claim as my invention- 1. A lamp provided with side openings x admitting air to the reservoir, and with a wicktube having an internal channel, through which the combined air and vapor from the reservoir can pass over the wick to and ont of the upper end of the wick-tube, as set forth.

2. The combination of the tubes a a, the dome D, and chambers h he' i having separate air-inlet passa-ges, and all communicating within the dome above the wick-tubes, as set forth. j

3. The combination of the tubes, dome, chambers h h e' i, and central chamberfp, all as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALBERT G. BUZBY.

' Witnesses:

WM. A. STEEL, HARRY SMITH. 

